/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:54:34,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:54:34,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:54:34,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:54:34,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:54:34,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:54:34,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:54:34,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:54:34,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:54:34,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:54:34,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:54:34,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:54:34,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:54:34,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:54:34,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:54:34,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:54:34,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:54:34,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:54:34,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:54:34,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:54:34,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:54:34,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:54:34,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:54:34,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:54:34,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:54:34,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:54:34,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:54:34,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:54:34,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:54:34,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:54:34,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:54:34,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:54:34,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:54:34,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:54:34,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:54:34,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:54:34,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:54:34,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:54:34,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:54:34,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:54:34,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:54:34,179 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 13:54:34,223 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:54:34,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:54:34,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:54:34,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:54:34,225 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:54:34,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:54:34,226 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:54:34,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:54:34,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:54:34,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:54:34,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:54:34,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:54:34,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:54:34,229 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:54:34,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:54:34,229 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:54:34,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:54:34,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:54:34,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:54:34,230 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:54:34,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:54:34,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:54:34,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:54:34,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:54:34,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:54:34,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:54:34,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:54:34,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:54:34,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:54:34,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:54:34,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:54:34,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:54:34,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:54:34,574 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:54:34,574 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:54:34,575 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 13:54:34,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44b77f07b/44123ab88008496e8564c6e442185304/FLAG5efd7f5a7 [2020-10-13 13:54:35,133 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:54:35,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 13:54:35,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44b77f07b/44123ab88008496e8564c6e442185304/FLAG5efd7f5a7 [2020-10-13 13:54:35,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44b77f07b/44123ab88008496e8564c6e442185304 [2020-10-13 13:54:35,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:54:35,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:54:35,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:54:35,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:54:35,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:54:35,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:54:35" (1/1) ... [2020-10-13 13:54:35,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f98ced9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:35, skipping insertion in model container [2020-10-13 13:54:35,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:54:35" (1/1) ... [2020-10-13 13:54:35,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:54:35,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:54:36,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:54:36,213 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:54:36,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:54:36,739 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:54:36,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:36 WrapperNode [2020-10-13 13:54:36,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:54:36,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:54:36,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:54:36,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:54:36,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:36" (1/1) ... [2020-10-13 13:54:36,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:36" (1/1) ... [2020-10-13 13:54:36,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:36" (1/1) ... [2020-10-13 13:54:36,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:36" (1/1) ... [2020-10-13 13:54:36,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:36" (1/1) ... [2020-10-13 13:54:36,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:36" (1/1) ... [2020-10-13 13:54:36,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:36" (1/1) ... [2020-10-13 13:54:36,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:54:36,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:54:36,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:54:36,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:54:36,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:54:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:54:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:54:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:54:36,920 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:54:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:54:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:54:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:54:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:54:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:54:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:54:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:54:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:54:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:54:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:54:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:54:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:54:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:54:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:54:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:54:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:54:38,594 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:54:38,595 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:54:38,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:54:38 BoogieIcfgContainer [2020-10-13 13:54:38,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:54:38,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:54:38,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:54:38,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:54:38,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:54:35" (1/3) ... [2020-10-13 13:54:38,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3418de47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:54:38, skipping insertion in model container [2020-10-13 13:54:38,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:54:36" (2/3) ... [2020-10-13 13:54:38,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3418de47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:54:38, skipping insertion in model container [2020-10-13 13:54:38,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:54:38" (3/3) ... [2020-10-13 13:54:38,612 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 13:54:38,624 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:54:38,633 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-13 13:54:38,649 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-13 13:54:38,680 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:54:38,680 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:54:38,681 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:54:38,681 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:54:38,681 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:54:38,681 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:54:38,681 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:54:38,682 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:54:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states. [2020-10-13 13:54:38,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 13:54:38,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:38,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:54:38,730 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:38,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:38,737 INFO L82 PathProgramCache]: Analyzing trace with hash 32558119, now seen corresponding path program 1 times [2020-10-13 13:54:38,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:38,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068345238] [2020-10-13 13:54:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:39,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:39,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:39,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:40,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:40,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:40,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:40,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:40,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:41,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:41,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:42,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:44,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:44,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 13:54:44,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:54:44,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:54:44,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:44,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:54:44,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:54:44,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 13:54:44,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:54:44,777 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:54:44,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:44,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:44,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:44,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:44,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:44,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:54:44,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:44,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068345238] [2020-10-13 13:54:44,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:44,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:54:44,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459704919] [2020-10-13 13:54:44,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:54:44,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:44,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:54:44,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:54:44,880 INFO L87 Difference]: Start difference. First operand 382 states. Second operand 5 states. [2020-10-13 13:54:48,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:54:48,606 INFO L93 Difference]: Finished difference Result 1107 states and 1990 transitions. [2020-10-13 13:54:48,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:54:48,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-13 13:54:48,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:54:48,630 INFO L225 Difference]: With dead ends: 1107 [2020-10-13 13:54:48,630 INFO L226 Difference]: Without dead ends: 730 [2020-10-13 13:54:48,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:54:48,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-10-13 13:54:48,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 705. [2020-10-13 13:54:48,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-10-13 13:54:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1008 transitions. [2020-10-13 13:54:48,737 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1008 transitions. Word has length 143 [2020-10-13 13:54:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:54:48,737 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 1008 transitions. [2020-10-13 13:54:48,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:54:48,738 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1008 transitions. [2020-10-13 13:54:48,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 13:54:48,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:48,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:54:48,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:54:48,744 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:48,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:48,745 INFO L82 PathProgramCache]: Analyzing trace with hash 299299577, now seen corresponding path program 1 times [2020-10-13 13:54:48,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:48,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707127258] [2020-10-13 13:54:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:48,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:48,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:48,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:49,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:49,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:49,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:49,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:49,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:50,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:52,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:52,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:53,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:53,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:53,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:53,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:53,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 13:54:53,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 13:54:53,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:54:53,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:53,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:54:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:54:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:54:53,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:54:54,233 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:54:54,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:54,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:54,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:54,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:54:54,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:54,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:54,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:54,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:54,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707127258] [2020-10-13 13:54:54,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:54,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:54:54,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101602134] [2020-10-13 13:54:54,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:54:54,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:54,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:54:54,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:54:54,295 INFO L87 Difference]: Start difference. First operand 705 states and 1008 transitions. Second operand 4 states. [2020-10-13 13:54:56,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:54:56,058 INFO L93 Difference]: Finished difference Result 2069 states and 2954 transitions. [2020-10-13 13:54:56,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:54:56,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-10-13 13:54:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:54:56,069 INFO L225 Difference]: With dead ends: 2069 [2020-10-13 13:54:56,070 INFO L226 Difference]: Without dead ends: 1396 [2020-10-13 13:54:56,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:54:56,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2020-10-13 13:54:56,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 707. [2020-10-13 13:54:56,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2020-10-13 13:54:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1010 transitions. [2020-10-13 13:54:56,122 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1010 transitions. Word has length 144 [2020-10-13 13:54:56,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:54:56,122 INFO L479 AbstractCegarLoop]: Abstraction has 707 states and 1010 transitions. [2020-10-13 13:54:56,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:54:56,122 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1010 transitions. [2020-10-13 13:54:56,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 13:54:56,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:56,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:54:56,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:54:56,126 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:56,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:56,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1720684422, now seen corresponding path program 1 times [2020-10-13 13:54:56,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:56,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389936471] [2020-10-13 13:54:56,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:56,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:56,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:56,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:56,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:56,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:56,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:57,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:57,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:57,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:57,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:01,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:01,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 13:55:01,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:55:01,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:55:01,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:01,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:55:01,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 13:55:01,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:55:01,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:01,574 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:55:01,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:01,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:01,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:01,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:01,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:01,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:55:01,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:01,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:01,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:01,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:01,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:55:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:01,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389936471] [2020-10-13 13:55:01,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:01,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:01,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934263295] [2020-10-13 13:55:01,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:55:01,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:01,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:55:01,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:55:01,668 INFO L87 Difference]: Start difference. First operand 707 states and 1010 transitions. Second operand 5 states. [2020-10-13 13:55:03,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:03,298 INFO L93 Difference]: Finished difference Result 1396 states and 1995 transitions. [2020-10-13 13:55:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:55:03,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-13 13:55:03,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:03,303 INFO L225 Difference]: With dead ends: 1396 [2020-10-13 13:55:03,303 INFO L226 Difference]: Without dead ends: 707 [2020-10-13 13:55:03,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:03,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-10-13 13:55:03,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 706. [2020-10-13 13:55:03,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-13 13:55:03,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1007 transitions. [2020-10-13 13:55:03,338 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1007 transitions. Word has length 145 [2020-10-13 13:55:03,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:03,339 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 1007 transitions. [2020-10-13 13:55:03,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:55:03,339 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1007 transitions. [2020-10-13 13:55:03,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 13:55:03,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:03,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:03,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:55:03,343 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:03,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:03,343 INFO L82 PathProgramCache]: Analyzing trace with hash -561379222, now seen corresponding path program 1 times [2020-10-13 13:55:03,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:03,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769536103] [2020-10-13 13:55:03,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:03,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:04,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:04,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:05,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:08,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:08,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 13:55:08,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:55:08,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 13:55:08,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:08,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:55:08,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:55:08,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 13:55:08,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:55:08,821 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:55:08,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:08,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:08,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:08,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:08,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:55:08,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:08,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769536103] [2020-10-13 13:55:08,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:08,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:08,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599800066] [2020-10-13 13:55:08,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:55:08,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:08,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:55:08,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:55:08,893 INFO L87 Difference]: Start difference. First operand 706 states and 1007 transitions. Second operand 5 states. [2020-10-13 13:55:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:12,136 INFO L93 Difference]: Finished difference Result 1728 states and 2450 transitions. [2020-10-13 13:55:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:55:12,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-13 13:55:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:12,145 INFO L225 Difference]: With dead ends: 1728 [2020-10-13 13:55:12,145 INFO L226 Difference]: Without dead ends: 1055 [2020-10-13 13:55:12,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-10-13 13:55:12,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1033. [2020-10-13 13:55:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1033 states. [2020-10-13 13:55:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1454 transitions. [2020-10-13 13:55:12,234 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1454 transitions. Word has length 145 [2020-10-13 13:55:12,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:12,236 INFO L479 AbstractCegarLoop]: Abstraction has 1033 states and 1454 transitions. [2020-10-13 13:55:12,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:55:12,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1454 transitions. [2020-10-13 13:55:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 13:55:12,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:12,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:12,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:55:12,240 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:12,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:12,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1386963458, now seen corresponding path program 1 times [2020-10-13 13:55:12,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:12,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144468503] [2020-10-13 13:55:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:12,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:12,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:12,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:12,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:12,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:12,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:12,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:12,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:12,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:13,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:14,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:14,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:17,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:17,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 13:55:17,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:55:17,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 13:55:17,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:55:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 13:55:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 13:55:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:17,590 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:55:17,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:17,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:17,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:17,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:17,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:55:17,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:17,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:17,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144468503] [2020-10-13 13:55:17,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:17,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:55:17,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380058054] [2020-10-13 13:55:17,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:55:17,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:17,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:55:17,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:17,664 INFO L87 Difference]: Start difference. First operand 1033 states and 1454 transitions. Second operand 4 states. [2020-10-13 13:55:20,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:20,439 INFO L93 Difference]: Finished difference Result 2391 states and 3388 transitions. [2020-10-13 13:55:20,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:55:20,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-13 13:55:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:20,448 INFO L225 Difference]: With dead ends: 2391 [2020-10-13 13:55:20,448 INFO L226 Difference]: Without dead ends: 1624 [2020-10-13 13:55:20,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:20,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2020-10-13 13:55:20,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1604. [2020-10-13 13:55:20,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2020-10-13 13:55:20,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2241 transitions. [2020-10-13 13:55:20,530 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2241 transitions. Word has length 153 [2020-10-13 13:55:20,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:20,530 INFO L479 AbstractCegarLoop]: Abstraction has 1604 states and 2241 transitions. [2020-10-13 13:55:20,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:55:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2241 transitions. [2020-10-13 13:55:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 13:55:20,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:20,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:20,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:55:20,535 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:20,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:20,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1237716964, now seen corresponding path program 1 times [2020-10-13 13:55:20,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:20,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717248995] [2020-10-13 13:55:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:20,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:20,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:20,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:20,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:20,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:20,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:20,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:20,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:21,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:25,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:25,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 13:55:25,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:55:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:55:25,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:55:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:55:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:55:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:25,884 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:55:25,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:25,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:25,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:25,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:25,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:25,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:55:25,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:25,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:55:25,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:25,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:55:25,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:25,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717248995] [2020-10-13 13:55:25,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:25,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:25,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383591453] [2020-10-13 13:55:25,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:55:25,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:25,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:55:25,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:25,962 INFO L87 Difference]: Start difference. First operand 1604 states and 2241 transitions. Second operand 6 states. [2020-10-13 13:55:26,226 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 13:55:27,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:27,949 INFO L93 Difference]: Finished difference Result 3988 states and 5650 transitions. [2020-10-13 13:55:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:55:27,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2020-10-13 13:55:27,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:27,961 INFO L225 Difference]: With dead ends: 3988 [2020-10-13 13:55:27,962 INFO L226 Difference]: Without dead ends: 2608 [2020-10-13 13:55:27,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:55:27,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2020-10-13 13:55:28,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2602. [2020-10-13 13:55:28,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2602 states. [2020-10-13 13:55:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3665 transitions. [2020-10-13 13:55:28,113 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3665 transitions. Word has length 153 [2020-10-13 13:55:28,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:28,113 INFO L479 AbstractCegarLoop]: Abstraction has 2602 states and 3665 transitions. [2020-10-13 13:55:28,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:55:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3665 transitions. [2020-10-13 13:55:28,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 13:55:28,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:28,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:28,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:55:28,119 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:28,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:28,120 INFO L82 PathProgramCache]: Analyzing trace with hash 766238692, now seen corresponding path program 1 times [2020-10-13 13:55:28,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:28,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670476181] [2020-10-13 13:55:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:28,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:28,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:28,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:28,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:28,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:28,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:30,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:31,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:31,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:31,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:33,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:33,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 13:55:33,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:55:33,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:55:33,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:55:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:55:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:55:33,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:33,451 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:55:33,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:33,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:33,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:33,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:33,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:33,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:55:33,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:33,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:33,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:33,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:33,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:33,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670476181] [2020-10-13 13:55:33,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:33,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:55:33,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666085954] [2020-10-13 13:55:33,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:55:33,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:33,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:55:33,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:55:33,541 INFO L87 Difference]: Start difference. First operand 2602 states and 3665 transitions. Second operand 5 states. [2020-10-13 13:55:36,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:36,790 INFO L93 Difference]: Finished difference Result 7569 states and 10619 transitions. [2020-10-13 13:55:36,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:55:36,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-13 13:55:36,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:36,813 INFO L225 Difference]: With dead ends: 7569 [2020-10-13 13:55:36,813 INFO L226 Difference]: Without dead ends: 5034 [2020-10-13 13:55:36,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:55:36,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5034 states. [2020-10-13 13:55:37,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 5003. [2020-10-13 13:55:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5003 states. [2020-10-13 13:55:37,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5003 states to 5003 states and 6974 transitions. [2020-10-13 13:55:37,178 INFO L78 Accepts]: Start accepts. Automaton has 5003 states and 6974 transitions. Word has length 153 [2020-10-13 13:55:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:37,179 INFO L479 AbstractCegarLoop]: Abstraction has 5003 states and 6974 transitions. [2020-10-13 13:55:37,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:55:37,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5003 states and 6974 transitions. [2020-10-13 13:55:37,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 13:55:37,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:37,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:37,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:55:37,190 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:37,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:37,190 INFO L82 PathProgramCache]: Analyzing trace with hash 987679374, now seen corresponding path program 1 times [2020-10-13 13:55:37,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:37,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969947292] [2020-10-13 13:55:37,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:37,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:37,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:37,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:37,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:37,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:37,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:38,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:38,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:38,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:39,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:39,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:39,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:39,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:42,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:42,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:42,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 13:55:42,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 13:55:42,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:55:42,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:42,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:55:42,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:55:42,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:55:42,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:42,449 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:55:42,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:42,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:42,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:42,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:42,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:42,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:55:42,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:42,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:42,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969947292] [2020-10-13 13:55:42,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:42,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:55:42,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816193567] [2020-10-13 13:55:42,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:55:42,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:42,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:55:42,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:42,481 INFO L87 Difference]: Start difference. First operand 5003 states and 6974 transitions. Second operand 4 states. [2020-10-13 13:55:45,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:45,726 INFO L93 Difference]: Finished difference Result 14875 states and 20716 transitions. [2020-10-13 13:55:45,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:55:45,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-13 13:55:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:45,757 INFO L225 Difference]: With dead ends: 14875 [2020-10-13 13:55:45,758 INFO L226 Difference]: Without dead ends: 9951 [2020-10-13 13:55:45,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:45,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9951 states. [2020-10-13 13:55:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9951 to 5011. [2020-10-13 13:55:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5011 states. [2020-10-13 13:55:46,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5011 states to 5011 states and 6982 transitions. [2020-10-13 13:55:46,221 INFO L78 Accepts]: Start accepts. Automaton has 5011 states and 6982 transitions. Word has length 154 [2020-10-13 13:55:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:46,221 INFO L479 AbstractCegarLoop]: Abstraction has 5011 states and 6982 transitions. [2020-10-13 13:55:46,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:55:46,221 INFO L276 IsEmpty]: Start isEmpty. Operand 5011 states and 6982 transitions. [2020-10-13 13:55:46,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 13:55:46,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:46,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:46,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:55:46,231 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:46,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:46,231 INFO L82 PathProgramCache]: Analyzing trace with hash -885688317, now seen corresponding path program 1 times [2020-10-13 13:55:46,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:46,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200758251] [2020-10-13 13:55:46,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:46,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:46,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:47,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:48,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:50,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:50,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:50,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:51,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:51,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 13:55:51,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 13:55:51,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:55:51,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:55:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:55:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:55:51,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:51,523 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:55:51,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:51,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:51,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:51,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:51,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:55:51,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:51,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200758251] [2020-10-13 13:55:51,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:51,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:55:51,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12391307] [2020-10-13 13:55:51,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:55:51,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:51,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:55:51,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:51,562 INFO L87 Difference]: Start difference. First operand 5011 states and 6982 transitions. Second operand 4 states. [2020-10-13 13:55:54,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:54,788 INFO L93 Difference]: Finished difference Result 13220 states and 18431 transitions. [2020-10-13 13:55:54,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:55:54,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-13 13:55:54,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:54,821 INFO L225 Difference]: With dead ends: 13220 [2020-10-13 13:55:54,821 INFO L226 Difference]: Without dead ends: 8824 [2020-10-13 13:55:54,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:55:54,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8824 states. [2020-10-13 13:55:55,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8824 to 8793. [2020-10-13 13:55:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8793 states. [2020-10-13 13:55:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8793 states to 8793 states and 12073 transitions. [2020-10-13 13:55:55,420 INFO L78 Accepts]: Start accepts. Automaton has 8793 states and 12073 transitions. Word has length 155 [2020-10-13 13:55:55,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:55,420 INFO L479 AbstractCegarLoop]: Abstraction has 8793 states and 12073 transitions. [2020-10-13 13:55:55,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:55:55,420 INFO L276 IsEmpty]: Start isEmpty. Operand 8793 states and 12073 transitions. [2020-10-13 13:55:55,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 13:55:55,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:55,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:55:55,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:55:55,434 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:55,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:55,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1119659130, now seen corresponding path program 1 times [2020-10-13 13:55:55,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:55,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741912715] [2020-10-13 13:55:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:55,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:55,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:55,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:55,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:55,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:55,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:55,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:55,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:55,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:56,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:56,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:57,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:57,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:57,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:57,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:57,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:00,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:00,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:00,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:00,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 13:56:00,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 13:56:00,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 13:56:00,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:56:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:56:00,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:00,734 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:56:00,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:00,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:00,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:00,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:00,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:00,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:56:00,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:00,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:00,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741912715] [2020-10-13 13:56:00,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:00,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:00,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981723458] [2020-10-13 13:56:00,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:00,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:00,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:00,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:00,766 INFO L87 Difference]: Start difference. First operand 8793 states and 12073 transitions. Second operand 5 states. [2020-10-13 13:56:02,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:02,925 INFO L93 Difference]: Finished difference Result 18394 states and 24999 transitions. [2020-10-13 13:56:02,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:02,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-13 13:56:02,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:02,945 INFO L225 Difference]: With dead ends: 18394 [2020-10-13 13:56:02,945 INFO L226 Difference]: Without dead ends: 9296 [2020-10-13 13:56:02,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:02,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9296 states. [2020-10-13 13:56:03,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9296 to 9265. [2020-10-13 13:56:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9265 states. [2020-10-13 13:56:03,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9265 states to 9265 states and 12499 transitions. [2020-10-13 13:56:03,503 INFO L78 Accepts]: Start accepts. Automaton has 9265 states and 12499 transitions. Word has length 155 [2020-10-13 13:56:03,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:03,504 INFO L479 AbstractCegarLoop]: Abstraction has 9265 states and 12499 transitions. [2020-10-13 13:56:03,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:03,504 INFO L276 IsEmpty]: Start isEmpty. Operand 9265 states and 12499 transitions. [2020-10-13 13:56:03,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 13:56:03,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:03,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:03,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:56:03,518 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:03,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:03,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1458853571, now seen corresponding path program 1 times [2020-10-13 13:56:03,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:03,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411397099] [2020-10-13 13:56:03,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:03,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:03,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:03,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:03,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:03,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:03,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:04,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:05,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:05,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:05,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:08,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:08,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:08,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 13:56:08,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:56:08,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:56:08,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 13:56:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 13:56:08,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:08,895 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:56:08,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:08,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:08,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:08,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:08,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:08,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:56:08,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:08,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:08,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:08,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:08,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:08,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411397099] [2020-10-13 13:56:08,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:08,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:08,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759972678] [2020-10-13 13:56:08,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:08,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:08,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:08,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:08,932 INFO L87 Difference]: Start difference. First operand 9265 states and 12499 transitions. Second operand 5 states. [2020-10-13 13:56:10,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:10,830 INFO L93 Difference]: Finished difference Result 17999 states and 24369 transitions. [2020-10-13 13:56:10,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:10,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-13 13:56:10,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:10,850 INFO L225 Difference]: With dead ends: 17999 [2020-10-13 13:56:10,850 INFO L226 Difference]: Without dead ends: 8979 [2020-10-13 13:56:10,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:10,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8979 states. [2020-10-13 13:56:11,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8979 to 8967. [2020-10-13 13:56:11,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8967 states. [2020-10-13 13:56:11,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8967 states to 8967 states and 12141 transitions. [2020-10-13 13:56:11,390 INFO L78 Accepts]: Start accepts. Automaton has 8967 states and 12141 transitions. Word has length 155 [2020-10-13 13:56:11,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:11,390 INFO L479 AbstractCegarLoop]: Abstraction has 8967 states and 12141 transitions. [2020-10-13 13:56:11,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:11,391 INFO L276 IsEmpty]: Start isEmpty. Operand 8967 states and 12141 transitions. [2020-10-13 13:56:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 13:56:11,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:11,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:11,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:56:11,401 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:11,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:11,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1324306986, now seen corresponding path program 1 times [2020-10-13 13:56:11,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:11,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543001123] [2020-10-13 13:56:11,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:11,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:12,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:14,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:14,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:16,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:16,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 13:56:16,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:56:16,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:56:16,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:56:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:56:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:56:16,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:16,674 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:56:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:16,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:16,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:16,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:16,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:56:16,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:16,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:16,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543001123] [2020-10-13 13:56:16,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:16,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:56:16,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855171301] [2020-10-13 13:56:16,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:56:16,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:16,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:56:16,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:16,706 INFO L87 Difference]: Start difference. First operand 8967 states and 12141 transitions. Second operand 4 states. [2020-10-13 13:56:19,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:19,493 INFO L93 Difference]: Finished difference Result 21480 states and 29048 transitions. [2020-10-13 13:56:19,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:56:19,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-13 13:56:19,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:19,524 INFO L225 Difference]: With dead ends: 21480 [2020-10-13 13:56:19,525 INFO L226 Difference]: Without dead ends: 17747 [2020-10-13 13:56:19,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:19,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17747 states. [2020-10-13 13:56:20,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17747 to 8983. [2020-10-13 13:56:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8983 states. [2020-10-13 13:56:20,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8983 states to 8983 states and 12157 transitions. [2020-10-13 13:56:20,286 INFO L78 Accepts]: Start accepts. Automaton has 8983 states and 12157 transitions. Word has length 156 [2020-10-13 13:56:20,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:20,286 INFO L479 AbstractCegarLoop]: Abstraction has 8983 states and 12157 transitions. [2020-10-13 13:56:20,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:56:20,286 INFO L276 IsEmpty]: Start isEmpty. Operand 8983 states and 12157 transitions. [2020-10-13 13:56:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 13:56:20,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:20,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:20,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:56:20,293 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:20,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:20,293 INFO L82 PathProgramCache]: Analyzing trace with hash -831661787, now seen corresponding path program 1 times [2020-10-13 13:56:20,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:20,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854112256] [2020-10-13 13:56:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:20,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:20,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:20,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:20,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:20,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:20,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:20,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:20,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:20,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:22,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:22,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:22,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:25,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:25,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 13:56:25,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:56:25,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:56:25,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:25,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:25,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:56:25,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:56:25,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:25,592 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:56:25,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:25,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:25,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:25,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:25,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:25,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:56:25,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:25,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:25,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854112256] [2020-10-13 13:56:25,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:25,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:25,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559767011] [2020-10-13 13:56:25,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:25,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:25,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:25,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:25,628 INFO L87 Difference]: Start difference. First operand 8983 states and 12157 transitions. Second operand 5 states. [2020-10-13 13:56:29,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:29,324 INFO L93 Difference]: Finished difference Result 25993 states and 35072 transitions. [2020-10-13 13:56:29,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:29,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 13:56:29,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:29,355 INFO L225 Difference]: With dead ends: 25993 [2020-10-13 13:56:29,355 INFO L226 Difference]: Without dead ends: 17338 [2020-10-13 13:56:29,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:29,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17338 states. [2020-10-13 13:56:30,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17338 to 17307. [2020-10-13 13:56:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17307 states. [2020-10-13 13:56:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17307 states to 17307 states and 23070 transitions. [2020-10-13 13:56:30,315 INFO L78 Accepts]: Start accepts. Automaton has 17307 states and 23070 transitions. Word has length 157 [2020-10-13 13:56:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:30,316 INFO L479 AbstractCegarLoop]: Abstraction has 17307 states and 23070 transitions. [2020-10-13 13:56:30,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 17307 states and 23070 transitions. [2020-10-13 13:56:30,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 13:56:30,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:30,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:30,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:56:30,327 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:30,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:30,327 INFO L82 PathProgramCache]: Analyzing trace with hash -252868184, now seen corresponding path program 1 times [2020-10-13 13:56:30,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:30,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935030524] [2020-10-13 13:56:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:30,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:30,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:30,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:30,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:30,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:30,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:30,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:30,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:35,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 13:56:35,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:56:35,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:56:35,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:56:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 13:56:35,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:35,656 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:56:35,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:35,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:35,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:35,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:35,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:35,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:56:35,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:35,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:35,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935030524] [2020-10-13 13:56:35,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:35,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:35,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385450846] [2020-10-13 13:56:35,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:35,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:35,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:35,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:35,690 INFO L87 Difference]: Start difference. First operand 17307 states and 23070 transitions. Second operand 5 states. [2020-10-13 13:56:37,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:37,901 INFO L93 Difference]: Finished difference Result 27074 states and 36351 transitions. [2020-10-13 13:56:37,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:37,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 13:56:37,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:37,918 INFO L225 Difference]: With dead ends: 27074 [2020-10-13 13:56:37,918 INFO L226 Difference]: Without dead ends: 13229 [2020-10-13 13:56:37,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:37,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13229 states. [2020-10-13 13:56:38,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13229 to 13203. [2020-10-13 13:56:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13203 states. [2020-10-13 13:56:38,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13203 states to 13203 states and 17584 transitions. [2020-10-13 13:56:38,879 INFO L78 Accepts]: Start accepts. Automaton has 13203 states and 17584 transitions. Word has length 157 [2020-10-13 13:56:38,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:38,880 INFO L479 AbstractCegarLoop]: Abstraction has 13203 states and 17584 transitions. [2020-10-13 13:56:38,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:38,880 INFO L276 IsEmpty]: Start isEmpty. Operand 13203 states and 17584 transitions. [2020-10-13 13:56:38,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-13 13:56:38,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:38,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:38,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:56:38,889 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:38,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:38,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1317231357, now seen corresponding path program 1 times [2020-10-13 13:56:38,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:38,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437562443] [2020-10-13 13:56:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:38,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:38,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:39,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:39,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:39,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:39,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:39,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:43,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:43,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:43,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:43,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 13:56:43,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:56:43,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 13:56:43,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:56:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:56:43,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:44,204 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:56:44,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:44,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:44,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:44,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:44,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:44,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:56:44,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:44,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:44,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437562443] [2020-10-13 13:56:44,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:44,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:44,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654110476] [2020-10-13 13:56:44,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:44,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:44,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:44,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:44,238 INFO L87 Difference]: Start difference. First operand 13203 states and 17584 transitions. Second operand 5 states. [2020-10-13 13:56:46,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:46,261 INFO L93 Difference]: Finished difference Result 15416 states and 20561 transitions. [2020-10-13 13:56:46,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:46,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-13 13:56:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:46,272 INFO L225 Difference]: With dead ends: 15416 [2020-10-13 13:56:46,273 INFO L226 Difference]: Without dead ends: 11851 [2020-10-13 13:56:46,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11851 states. [2020-10-13 13:56:46,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11851 to 11837. [2020-10-13 13:56:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11837 states. [2020-10-13 13:56:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11837 states to 11837 states and 15798 transitions. [2020-10-13 13:56:46,978 INFO L78 Accepts]: Start accepts. Automaton has 11837 states and 15798 transitions. Word has length 165 [2020-10-13 13:56:46,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:46,978 INFO L479 AbstractCegarLoop]: Abstraction has 11837 states and 15798 transitions. [2020-10-13 13:56:46,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 11837 states and 15798 transitions. [2020-10-13 13:56:46,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 13:56:46,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:46,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:46,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:56:46,987 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:46,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1897657595, now seen corresponding path program 1 times [2020-10-13 13:56:46,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:46,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163239261] [2020-10-13 13:56:46,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:47,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:48,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:48,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:51,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:52,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:52,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 13:56:52,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:56:52,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:56:52,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:56:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:56:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:56:52,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:52,305 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:56:52,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:52,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:52,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:52,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:52,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:52,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:56:52,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:52,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:52,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:52,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:52,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:52,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163239261] [2020-10-13 13:56:52,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:52,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:56:52,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566836344] [2020-10-13 13:56:52,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:56:52,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:52,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:56:52,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:52,350 INFO L87 Difference]: Start difference. First operand 11837 states and 15798 transitions. Second operand 5 states. [2020-10-13 13:56:55,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:55,412 INFO L93 Difference]: Finished difference Result 18909 states and 25263 transitions. [2020-10-13 13:56:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:55,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-13 13:56:55,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:55,422 INFO L225 Difference]: With dead ends: 18909 [2020-10-13 13:56:55,423 INFO L226 Difference]: Without dead ends: 10595 [2020-10-13 13:56:55,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:56:55,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10595 states. [2020-10-13 13:56:56,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10595 to 10295. [2020-10-13 13:56:56,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10295 states. [2020-10-13 13:56:56,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10295 states to 10295 states and 13751 transitions. [2020-10-13 13:56:56,076 INFO L78 Accepts]: Start accepts. Automaton has 10295 states and 13751 transitions. Word has length 169 [2020-10-13 13:56:56,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:56,077 INFO L479 AbstractCegarLoop]: Abstraction has 10295 states and 13751 transitions. [2020-10-13 13:56:56,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:56:56,077 INFO L276 IsEmpty]: Start isEmpty. Operand 10295 states and 13751 transitions. [2020-10-13 13:56:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 13:56:56,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:56,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:56,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 13:56:56,085 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:56,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:56,085 INFO L82 PathProgramCache]: Analyzing trace with hash -940908312, now seen corresponding path program 1 times [2020-10-13 13:56:56,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:56,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100684957] [2020-10-13 13:56:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:56,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:01,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:01,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 13:57:01,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:57:01,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:57:01,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:57:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:57:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 13:57:01,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:01,402 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:57:01,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:01,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:01,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:01,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:01,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:01,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:57:01,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:57:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:57:01,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:01,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:01,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100684957] [2020-10-13 13:57:01,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:01,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:01,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337499845] [2020-10-13 13:57:01,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:57:01,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:01,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:57:01,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:57:01,457 INFO L87 Difference]: Start difference. First operand 10295 states and 13751 transitions. Second operand 6 states. [2020-10-13 13:57:01,732 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 13:57:04,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:04,894 INFO L93 Difference]: Finished difference Result 27036 states and 36538 transitions. [2020-10-13 13:57:04,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:57:04,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-13 13:57:04,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:04,909 INFO L225 Difference]: With dead ends: 27036 [2020-10-13 13:57:04,909 INFO L226 Difference]: Without dead ends: 17754 [2020-10-13 13:57:04,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:57:04,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17754 states. [2020-10-13 13:57:05,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17754 to 17748. [2020-10-13 13:57:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17748 states. [2020-10-13 13:57:05,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17748 states to 17748 states and 23762 transitions. [2020-10-13 13:57:05,951 INFO L78 Accepts]: Start accepts. Automaton has 17748 states and 23762 transitions. Word has length 171 [2020-10-13 13:57:05,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:05,951 INFO L479 AbstractCegarLoop]: Abstraction has 17748 states and 23762 transitions. [2020-10-13 13:57:05,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:57:05,952 INFO L276 IsEmpty]: Start isEmpty. Operand 17748 states and 23762 transitions. [2020-10-13 13:57:05,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 13:57:05,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:05,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:05,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 13:57:05,961 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:05,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:05,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1976799821, now seen corresponding path program 1 times [2020-10-13 13:57:05,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:05,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443624329] [2020-10-13 13:57:05,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:06,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:06,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:06,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:06,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:06,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:06,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:08,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:08,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:08,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:09,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:11,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:11,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 13:57:11,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:57:11,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 13:57:11,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:57:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:57:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 13:57:11,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:11,330 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:57:11,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:11,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:11,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:11,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:11,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:11,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:57:11,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:11,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:11,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:11,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:11,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:11,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443624329] [2020-10-13 13:57:11,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:11,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:11,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977662989] [2020-10-13 13:57:11,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:57:11,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:11,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:57:11,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:11,397 INFO L87 Difference]: Start difference. First operand 17748 states and 23762 transitions. Second operand 5 states. [2020-10-13 13:57:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:14,481 INFO L93 Difference]: Finished difference Result 21695 states and 29042 transitions. [2020-10-13 13:57:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:57:14,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-13 13:57:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:14,494 INFO L225 Difference]: With dead ends: 21695 [2020-10-13 13:57:14,494 INFO L226 Difference]: Without dead ends: 15554 [2020-10-13 13:57:14,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:57:14,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15554 states. [2020-10-13 13:57:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15554 to 15458. [2020-10-13 13:57:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15458 states. [2020-10-13 13:57:15,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15458 states to 15458 states and 20680 transitions. [2020-10-13 13:57:15,480 INFO L78 Accepts]: Start accepts. Automaton has 15458 states and 20680 transitions. Word has length 171 [2020-10-13 13:57:15,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:15,480 INFO L479 AbstractCegarLoop]: Abstraction has 15458 states and 20680 transitions. [2020-10-13 13:57:15,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:57:15,480 INFO L276 IsEmpty]: Start isEmpty. Operand 15458 states and 20680 transitions. [2020-10-13 13:57:15,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 13:57:15,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:15,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:15,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 13:57:15,488 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:15,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:15,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2109475883, now seen corresponding path program 1 times [2020-10-13 13:57:15,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:15,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415459236] [2020-10-13 13:57:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:15,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:15,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:15,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:15,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:15,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:16,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:19,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:20,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:20,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 13:57:20,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:57:20,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:57:20,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:57:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:57:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 13:57:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:20,818 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:57:20,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:20,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:20,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:20,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:20,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:57:20,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:57:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:57:20,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:20,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415459236] [2020-10-13 13:57:20,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:20,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:20,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55064093] [2020-10-13 13:57:20,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:57:20,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:20,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:57:20,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:57:20,897 INFO L87 Difference]: Start difference. First operand 15458 states and 20680 transitions. Second operand 6 states. [2020-10-13 13:57:21,183 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 13:57:25,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:25,164 INFO L93 Difference]: Finished difference Result 41934 states and 56563 transitions. [2020-10-13 13:57:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:57:25,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2020-10-13 13:57:25,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:25,194 INFO L225 Difference]: With dead ends: 41934 [2020-10-13 13:57:25,194 INFO L226 Difference]: Without dead ends: 27673 [2020-10-13 13:57:25,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:57:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27673 states. [2020-10-13 13:57:27,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27673 to 27654. [2020-10-13 13:57:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-10-13 13:57:27,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 36970 transitions. [2020-10-13 13:57:27,311 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 36970 transitions. Word has length 173 [2020-10-13 13:57:27,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:27,311 INFO L479 AbstractCegarLoop]: Abstraction has 27654 states and 36970 transitions. [2020-10-13 13:57:27,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:57:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 36970 transitions. [2020-10-13 13:57:27,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 13:57:27,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:27,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:27,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 13:57:27,324 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:27,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:27,324 INFO L82 PathProgramCache]: Analyzing trace with hash -2029799125, now seen corresponding path program 1 times [2020-10-13 13:57:27,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:27,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341873554] [2020-10-13 13:57:27,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:27,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:27,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:28,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:29,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:29,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:31,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:31,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:32,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:32,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 13:57:32,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:57:32,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:57:32,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:57:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 13:57:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 13:57:32,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:33,025 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:57:33,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:33,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:33,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:33,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:33,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:33,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:57:33,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:33,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:33,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:33,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:33,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:33,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341873554] [2020-10-13 13:57:33,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:33,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:57:33,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513277170] [2020-10-13 13:57:33,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:57:33,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:33,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:57:33,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:57:33,084 INFO L87 Difference]: Start difference. First operand 27654 states and 36970 transitions. Second operand 12 states. [2020-10-13 13:57:33,756 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-13 13:57:44,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:44,643 INFO L93 Difference]: Finished difference Result 72781 states and 102173 transitions. [2020-10-13 13:57:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 13:57:44,644 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 173 [2020-10-13 13:57:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:44,723 INFO L225 Difference]: With dead ends: 72781 [2020-10-13 13:57:44,723 INFO L226 Difference]: Without dead ends: 63153 [2020-10-13 13:57:44,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2020-10-13 13:57:44,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63153 states. [2020-10-13 13:57:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63153 to 31533. [2020-10-13 13:57:48,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31533 states. [2020-10-13 13:57:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31533 states to 31533 states and 41436 transitions. [2020-10-13 13:57:48,753 INFO L78 Accepts]: Start accepts. Automaton has 31533 states and 41436 transitions. Word has length 173 [2020-10-13 13:57:48,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:48,754 INFO L479 AbstractCegarLoop]: Abstraction has 31533 states and 41436 transitions. [2020-10-13 13:57:48,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:57:48,754 INFO L276 IsEmpty]: Start isEmpty. Operand 31533 states and 41436 transitions. [2020-10-13 13:57:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 13:57:48,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:48,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:48,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 13:57:48,772 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:48,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:48,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1666759420, now seen corresponding path program 1 times [2020-10-13 13:57:48,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:48,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712376351] [2020-10-13 13:57:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:48,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:48,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:49,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:50,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:50,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:52,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:53,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 13:57:53,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:57:53,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-13 13:57:53,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:53,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:57:53,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:57:53,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 13:57:53,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:54,162 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:57:54,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:54,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:54,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:54,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:54,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:54,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:57:54,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:54,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:54,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712376351] [2020-10-13 13:57:54,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:54,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:54,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482394801] [2020-10-13 13:57:54,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:57:54,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:54,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:57:54,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:54,208 INFO L87 Difference]: Start difference. First operand 31533 states and 41436 transitions. Second operand 5 states. [2020-10-13 13:57:54,470 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-13 13:57:59,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:59,851 INFO L93 Difference]: Finished difference Result 51386 states and 70554 transitions. [2020-10-13 13:57:59,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:57:59,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-13 13:57:59,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:59,889 INFO L225 Difference]: With dead ends: 51386 [2020-10-13 13:57:59,889 INFO L226 Difference]: Without dead ends: 40455 [2020-10-13 13:57:59,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:57:59,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40455 states. [2020-10-13 13:58:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40455 to 40453. [2020-10-13 13:58:03,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40453 states. [2020-10-13 13:58:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 53508 transitions. [2020-10-13 13:58:03,648 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 53508 transitions. Word has length 173 [2020-10-13 13:58:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:03,649 INFO L479 AbstractCegarLoop]: Abstraction has 40453 states and 53508 transitions. [2020-10-13 13:58:03,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:58:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 53508 transitions. [2020-10-13 13:58:03,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 13:58:03,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:03,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:03,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 13:58:03,673 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:03,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:03,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1223571839, now seen corresponding path program 1 times [2020-10-13 13:58:03,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:03,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372465894] [2020-10-13 13:58:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:03,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:03,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:04,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:08,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:08,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 13:58:08,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:58:08,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:58:08,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:08,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 13:58:08,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 13:58:08,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 13:58:08,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:09,867 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 19 [2020-10-13 13:58:10,528 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:58:10,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:10,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:10,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:10,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:10,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:10,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:58:10,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:10,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:10,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:10,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:10,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:10,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372465894] [2020-10-13 13:58:10,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:10,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-10-13 13:58:10,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301126855] [2020-10-13 13:58:10,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 13:58:10,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:10,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 13:58:10,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-10-13 13:58:10,665 INFO L87 Difference]: Start difference. First operand 40453 states and 53508 transitions. Second operand 22 states. [2020-10-13 13:58:11,096 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 126 [2020-10-13 13:58:13,461 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 321 DAG size of output: 306 [2020-10-13 13:58:15,612 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-10-13 13:58:16,454 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2020-10-13 13:58:16,721 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2020-10-13 13:58:16,916 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-13 13:58:17,935 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-13 13:58:18,132 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-13 13:58:18,311 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2020-10-13 13:58:19,619 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-13 13:58:19,839 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-13 13:58:20,019 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2020-10-13 13:58:20,359 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2020-10-13 13:58:20,769 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-10-13 13:58:20,979 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-10-13 13:58:21,175 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2020-10-13 13:58:22,445 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44